通用 LaTeX 数学公式语法手册

MathJax 是一款运行于 Web 浏览器当中的开源 JavaScript 数学符号渲染引擎,通过它可以方便的在现代 Web 浏览器当中显示数学公式,目前已经能够解析 LaTexMathML 等标记语言。MathJax 项目发源于 2009 年,目前由 NumFOCUS 基金会主持,并且得到了 MathJax 联盟的支持,该联盟是美国数学协会(AMS)和 工业与应用数学协会(SIAM)的共同合资企业。

LaTeX 是一种高质量的排版格式,可以生成复杂的表格与数学公式,是当前电子与数学出版行业的事实标准。本文以 Pandoc 作为 LaTex 渲染引擎(一款用于标记语言文档转换的命令行工具),分门别类的总结了撰写数学公式所需要经常使用到的 LaTeX 语法,方便写作相关科技类文章时随手查阅。

保留字符

LaTeX 环境中具有特殊含义的保留字符,不能直接使用,必须通过指定的语法实现:

序号 符号 LaTeX 序号 符号 LaTeX
1 \(\#\) \# 6 \(\{\) \{
2 \(\%\) \% 7 \(\}\) \}
3 \(^\wedge\) ^\wedge 8 \(\sim\) \sim
4 \(\&\) \& 9 \(\backslash\) \backslash
5 \(\_\) \_

希腊字母

序号 标准符号 LaTeX 首字母大写 LaTeX 使用 var 前缀 LaTeX 读音
1 \(\alpha\) \alpha         /ˈælfə/
2 \(\beta\) \beta         /ˈbeɪtə/
3 \(\gamma\) \gamma \(\Gamma\) \Gamma \(\varGamma\) \varGamma /ˈɡæmə/
4 \(\delta\) \delta \(\Delta\) \Delta \(\varDelta\) \varDelta /ˈdɛltə/
5 \(\epsilon\) \epsilon     \(\varepsilon\) \varepsilon /ˈɛpsɪlɒn/
6 \(\zeta\) \zeta         /ˈzeɪtə/
7 \(\eta\) \eta         /ˈeɪtə/
8 \(\theta\) \theta \(\Theta\) \Theta \(\vartheta\)\(\varTheta\) \vartheta\varTheta /ˈθiːtə/
9 \(\iota\) \iota         /aɪˈoʊtə/
10 \(\kappa\) \kappa     \(\varkappa\) \varkappa /ˈkæpə/
11 \(\lambda\) \lambda \(\Lambda\) \Lambda \(\varLambda\) \varLambda /ˈlæmdə/
12 \(\mu\) \mu         /mjuː/
13 \(\nu\) \nu         /njuː/
14 \(\xi\) \xi \(\Xi\) \Xi \(\varXi\) \varXi /zaɪ, ksaɪ/
15 \(o\) o \(O\) O     /ˈɒmɪkrɒn/
16 \(\pi\) \pi \(\Pi\) \Pi \(\varpi\)\(\varPi\) \varpi\varPi /paɪ/
17 \(\rho\) \rho     \(\varrho\) \varrho /roʊ/
18 \(\sigma\) \sigma \(\Sigma\) \Sigma \(\varsigma\)\(\varSigma\) \varsigma\varSigma /ˈsɪɡmə/
19 \(\tau\) \tau         /taʊ, tɔː/
20 \(\upsilon\) \upsilon \(\Upsilon\) \Upsilon \(\varUpsilon\) \varUpsilon /ˈʌpsɪlɒn/
21 \(\phi\) \phi \(\Phi\) \Phi \(\varphi\)\(\varPhi\) \varphi\varPhi /faɪ/
22 \(\chi\) \chi         /kaɪ/
23 \(\psi\) \psi \(\Psi\) \Psi \(\varPsi\) \varPsi /psaɪ/
24 \(\omega\) \omega \(\Omega\) \Omega \(\varOmega\) \varOmega /oʊˈmeɪɡə/
25 \(\digamma\) \digamma         /daɪ'gæmə/

希伯来字母

序号 符号 LaTeX 英文 序号 符号 LaTeX 英文
1 \(\aleph\) \aleph aleph 3 \(\gimel\) \gimel gimel
2 \(\beth\) \beth beth 4 \(\daleth\) \daleth daleth

二元运算符

序号 符号 LaTeX 序号 符号 LaTeX
1 \(+\) + 20 \(\bullet\) \bullet
2 \(-\) - 21 \(\oplus\) \oplus
3 \(\times\) \times 22 \(\ominus\) \ominus
4 \(\div\) \div 23 \(\odot\) \odot
5 \(\pm\) \pm 24 \(\oslash\) \oslash
6 \(\mp\) \mp 25 \(\otimes\) \otimes
7 \(\triangleleft\) \triangleleft 26 \(\bigcirc\) \bigcirc
8 \(\triangleright\) \triangleright 27 \(\diamond\) \diamond
9 \(\cdot\) \cdot 28 \(\uplus\) \uplus
10 \(\setminus\) \setminus 29 \(\bigtriangleup\) \bigtriangleup
11 \(\star\) \star 30 \(\bigtriangledown\) \bigtriangledown
12 \(\ast\) \ast 31 \(\lhd\) \lhd
13 \(\cup\) \cup 32 \(\rhd\) \rhd
14 \(\cap\) \cap 33 \(\unlhd\) \unlhd
15 \(\sqcup\) \sqcup 34 \(\unrhd\) \unrhd
16 \(\sqcap\) \sqcap 35 \(\amalg\) \amalg
17 \(\vee\) \vee 36 \(\wr\) \wr
18 \(\wedge\) \wedge 37 \(\dagger\) \dagger
19 \(\circ\) \circ 38 \(\ddagger\) \ddagger

二元关系符

序号 符号 LaTeX 序号 符号 LaTeX
1 \(=\) = 49 \(\gneq\) \gneq
2 \(\ne\) \ne 50 \(\geqq\) \geqq
3 \(\neq\) \neq 51 \(\ngeq\) \ngeq
4 \(\equiv\) \equiv 52 \(\ngeqq\) \ngeqq
5 \(\not\equiv\) \not\equiv 53 \(\gneqq\) \gneqq
6 \(\doteq\) \doteq 54 \(\gvertneqq\) \gvertneqq
7 \(\doteqdot\) \doteqdot 55 \(\lessgtr\) \lessgtr
8 \(\overset{\underset{\mathrm{def}}{}}{=}\) \overset{\underset{\mathrm{def}}{}}{=} 56 \(\lesseqgtr\) \lesseqgtr
9 \(:=\) := 57 \(\lesseqqgtr\) \lesseqqgtr
10 \(\sim\) \sim 58 \(\gtrless\) \gtrless
11 \(\nsim\) \nsim 59 \(\gtreqless\) \gtreqless
12 \(\backsim\) \backsim 60 \(\gtreqqless\) \gtreqqless
13 \(\thicksim\) \thicksim 61 \(\leqslant\) \leqslant
14 \(\simeq\) \simeq 62 \(\nleqslant\) \nleqslant
15 \(\backsimeq\) \backsimeq 63 \(\eqslantless\) \eqslantless
16 \(\eqsim\) \eqsim 64 \(\geqslant\) \geqslant
17 \(\cong\) \cong 65 \(\ngeqslant\) \ngeqslant
18 \(\ncong\) \ncong 66 \(\eqslantgtr\) \eqslantgtr
19 \(\approx\) \approx 67 \(\lesssim\) \lesssim
20 \(\thickapprox\) \thickapprox 68 \(\lnsim\) \lnsim
21 \(\approxeq\) \approxeq 69 \(\lessapprox\) \lessapprox
22 \(\asymp\) \asymp 70 \(\lnapprox\) \lnapprox
23 \(\propto\) \propto 71 \(\gtrsim\) \gtrsim
24 \(\varpropto\) \varpropto 72 \(\gnsim\) \gnsim
25 \(<\) < 73 \(\gtrapprox\) \gtrapprox
26 \(\nless\) \nless 74 \(\gnapprox\) \gnapprox
27 \(\ll\) \ll 75 \(\prec\) \prec
28 \(\not\ll\) \not\ll 76 \(\nprec\) \nprec
29 \(\lll\) \lll 77 \(\preceq\) \preceq
30 \(\not\lll\) \not\lll 78 \(\npreceq\) \npreceq
31 \(\lessdot\) \lessdot 79 \(\precneqq\) \precneqq
32 \(>\) > 80 \(\succ\) \succ
33 \(\ngtr\) \ngtr 81 \(\nsucc\) \nsucc
34 \(\gg\) \gg 82 \(\succeq\) \succeq
35 \(\not\gg\) \not\gg 83 \(\nsucceq\) \nsucceq
36 \(\ggg\) \ggg 84 \(\succneqq\) \succneqq
37 \(\not\ggg\) \not\ggg 85 \(\preccurlyeq\) \preccurlyeq
38 \(\gtrdot\) \gtrdot 86 \(\curlyeqprec\) \curlyeqprec
39 \(\le\) \le 87 \(\succcurlyeq\) \succcurlyeq
40 \(\leq\) \leq 88 \(\curlyeqsucc\) \curlyeqsucc
41 \(\lneq\) \lneq 89 \(\precsim\) \precsim
42 \(\leqq\) \leqq 90 \(\precnsim\) \precnsim
43 \(\nleq\) \nleq 91 \(\precapprox\) \precapprox
44 \(\nleqq\) \nleqq 92 \(\precnapprox\) \precnapprox
45 \(\lneqq\) \lneqq 93 \(\succsim\) \succsim
46 \(\lvertneqq\) \lvertneqq 94 \(\succnsim\) \succnsim
47 \(\ge\) \ge 95 \(\succapprox\) \succapprox
48 \(\geq\) \geq 96 \(\succnapprox\) \succnapprox

几何符号

序号 符号 LaTeX 序号 符号 LaTeX
1 \(\parallel\) \parallel 14 \(\lozenge\) \lozenge
2 \(\nparallel\) \nparallel 15 \(\blacklozenge\) \blacklozenge
3 \(\shortparallel\) \shortparallel 16 \(\bigstar\) \bigstar
4 \(\nshortparallel\) \nshortparallel 17 \(\bigcirc\) \bigcirc
5 \(\perp\) \perp 18 \(\triangle\) \triangle
6 \(\angle\) \angle 19 \(\bigtriangleup\) \bigtriangleup
7 \(\sphericalangle\) \sphericalangle 20 \(\bigtriangledown\) \bigtriangledown
8 \(\measuredangle\) \measuredangle 21 \(\vartriangle\) \vartriangle
9 \(45^\circ\) 45^\circ 22 \(\triangledown\) \triangledown
10 \(\Box\) \Box 23 \(\blacktriangle\) \blacktriangle
11 \(\blacksquare\) \blacksquare 24 \(\blacktriangledown\) \blacktriangledown
12 \(\diamond\) \diamond 25 \(\blacktriangleleft\) \blacktriangleleft
13 \(\Diamond \lozenge\) \Diamond \lozenge 26 \(\blacktriangleright\) \blacktriangleright

逻辑符号

序号 符号 LaTeX 序号 符号 LaTeX
1 \(\forall\) \forall 20 \(\neg\) \neg
2 \(\exists\) \exists 21 \(\not\operatorname{R}\) \not\operatorname{R}
3 \(\nexists\) \nexists 22 \(\bot\) \bot
4 \(\therefore\) \therefore 23 \(\top\) \top
5 \(\because\) \because 24 \(\vdash\) \vdash
6 \(\And\) \And 25 \(\dashv\) \dashv
7 \(\lor\) \lor 26 \(\vDash\) \vDash
8 \(\vee\) \vee 27 \(\Vdash\) \Vdash
9 \(\curlyvee\) \curlyvee 28 \(\models\) \models
10 \(\bigvee\) \bigvee 29 \(\Vvdash\) \Vvdash
11 \(\land\) \land 30 \(\nvdash\) \nvdash
12 \(\wedge\) \wedge 31 \(\nVdash\) \nVdash
13 \(\curlywedge\) \curlywedge 32 \(\nvDash\) \nvDash
14 \(\bigwedge\) \bigwedge 33 \(\nVDash\) \nVDash
15 \(\bar{q}\) \bar{q} 34 \(\ulcorner\) \ulcorner
16 \(\bar{abc}\) \bar{abc} 35 \(\urcorner\) \urcorner
17 \(\overline{q}\) \overline{q} 36 \(\llcorner\) \llcorner
18 \(\overline{abc}\) \overline{abc} 37 \(\lrcorner\) \lrcorner
19 \(\lnot\) \lnot

集合符号

序号 符号 LaTeX 序号 符号 LaTeX
1 \(\{ \}\) \{ \} 23 \(\sqsubset\) \sqsubset
2 \(\emptyset\) \emptyset 24 \(\supset\) \supset
3 \(\varnothing\) \varnothing 25 \(\Supset\) \Supset
4 \(\in\) \in 26 \(\sqsupset\) \sqsupset
5 \(\notin\) \notin 27 \(\subseteq\) \subseteq
6 \(\ni\) \ni 28 \(\nsubseteq\) \nsubseteq
7 \(\cap\) \cap 29 \(\subsetneq\) \subsetneq
8 \(\Cap\) \Cap 30 \(\varsubsetneq\) \varsubsetneq
9 \(\sqcap\) \sqcap 31 \(\sqsubseteq\) \sqsubseteq
10 \(\bigcap\) \bigcap 32 \(\supseteq\) \supseteq
11 \(\cup\) \cup 33 \(\nsupseteq\) \nsupseteq
12 \(\Cup\) \Cup 34 \(\supsetneq\) \supsetneq
13 \(\sqcup\) \sqcup 35 \(\varsupsetneq\) \varsupsetneq
14 \(\bigcup\) \bigcup 36 \(\sqsupseteq\) \sqsupseteq
15 \(\bigsqcup\) \bigsqcup 37 \(\subseteqq\) \subseteqq
16 \(\uplus\) \uplus 38 \(\nsubseteqq\) \nsubseteqq
17 \(\biguplus\) \biguplus 39 \(\subsetneqq\) \subsetneqq
18 \(\setminus\) \setminus 40 \(\varsubsetneqq\) \varsubsetneqq
19 \(\smallsetminus\) \smallsetminus 41 \(\supseteqq\) \supseteqq
20 \(\times\) \times 42 \(\nsupseteqq\) \nsupseteqq
21 \(\subset\) \subset 43 \(\supsetneqq\) \supsetneqq
22 \(\Subset\) \Subset 44 \(\varsupsetneqq\) \varsupsetneqq

箭头符号

序号 符号 LaTeX 序号 符号 LaTeX
1 \(\Rrightarrow\) \Rrightarrow 36 \(\longmapsto\) \longmapsto
2 \(\Lleftarrow\) \Lleftarrow 37 \(\rightharpoonup\) \rightharpoonup
3 \(\Rightarrow\) \Rightarrow 38 \(\rightharpoondown\) \rightharpoondown
4 \(\nRightarrow\) \nRightarrow 39 \(\leftharpoonup\) \leftharpoonup
5 \(\Longrightarrow\) \Longrightarrow 40 \(\leftharpoondown\) \leftharpoondown
6 \(\implies\) \implies 41 \(\upharpoonleft\) \upharpoonleft
7 \(\Leftarrow\) \Leftarrow 42 \(\upharpoonright\) \upharpoonright
8 \(\nLeftarrow\) \nLeftarrow 43 \(\downharpoonleft\) \downharpoonleft
9 \(\Longleftarrow\) \Longleftarrow 44 \(\downharpoonright\) \downharpoonright
10 \(\Leftrightarrow\) \Leftrightarrow 45 \(\rightleftharpoons\) \rightleftharpoons
11 \(\nLeftrightarrow\) \nLeftrightarrow 46 \(\leftrightharpoons\) \leftrightharpoons
12 \(\Longleftrightarrow\) \Longleftrightarrow 47 \(\curvearrowleft\) \curvearrowleft
13 \(\iff\) \iff 48 \(\circlearrowleft\) \circlearrowleft
14 \(\Uparrow\) \Uparrow 49 \(\Lsh\) \Lsh
15 \(\Downarrow\) \Downarrow 50 \(\upuparrows\) \upuparrows
16 \(\Updownarrow\) \Updownarrow 51 \(\rightrightarrows\) \rightrightarrows
17 \(\rightarrow\) \rightarrow 52 \(\rightleftarrows\) \rightleftarrows
18 \(\to\) \to 53 \(\rightarrowtail\) \rightarrowtail
19 \(\nrightarrow\) \nrightarrow 54 \(\looparrowright\) \looparrowright
20 \(\longrightarrow\) \longrightarrow 55 \(\curvearrowright\) \curvearrowright
21 \(\leftarrow\) \leftarrow 56 \(\circlearrowright\) \circlearrowright
22 \(\gets\) \gets 57 \(\Rsh\) \Rsh
23 \(\nleftarrow\) \nleftarrow 58 \(\downdownarrows\) \downdownarrows
24 \(\longleftarrow\) \longleftarrow 59 \(\leftleftarrows\) \leftleftarrows
25 \(\leftrightarrow\) \leftrightarrow 60 \(\leftrightarrows\) \leftrightarrows
26 \(\nleftrightarrow\) \nleftrightarrow 61 \(\leftarrowtail\) \leftarrowtail
27 \(\longleftrightarrow\) \longleftrightarrow 62 \(\looparrowleft\) \looparrowleft
28 \(\uparrow\) \uparrow 63 \(\hookrightarrow\) \hookrightarrow
29 \(\downarrow\) \downarrow 64 \(\hookleftarrow\) \hookleftarrow
30 \(\updownarrow\) \updownarrow 65 \(\multimap\) \multimap
31 \(\nearrow\) \nearrow 66 \(\leftrightsquigarrow\) \leftrightsquigarrow
32 \(\swarrow\) \swarrow 67 \(\rightsquigarrow\) \rightsquigarrow
33 \(\nwarrow\) \nwarrow 68 \(\twoheadrightarrow\) \twoheadrightarrow
34 \(\searrow\) \searrow 69 \(\twoheadleftarrow\) \twoheadleftarrow
35 \(\mapsto\) \mapsto

特殊符号

序号 符号 LaTeX 序号 符号 LaTeX
1 \(\infty\) \infty 33 \(\flat\) \flat
2 \(\aleph\) \aleph 34 \(\natural\) \natural
3 \(\complement\) \complement 35 \(\sharp\) \sharp
4 \(\backepsilon\) \backepsilon 36 \(\diagup\) \diagup
5 \(\eth\) \eth 37 \(\diagdown\) \diagdown
6 \(\Finv\) \Finv 38 \(\centerdot\) \centerdot
7 \(\hbar\) \hbar 39 \(\ltimes\) \ltimes
8 \(\Im\) \Im 40 \(\rtimes\) \rtimes
9 \(\imath\) \imath 41 \(\leftthreetimes\) \leftthreetimes
10 \(\jmath\) \jmath 42 \(\rightthreetimes\) \rightthreetimes
11 \(\Bbbk\) \Bbbk 43 \(\eqcirc\) \eqcirc
12 \(\ell\) \ell 44 \(\circeq\) \circeq
13 \(\mho\) \mho 45 \(\triangleq\) \triangleq
14 \(\wp\) \wp 46 \(\bumpeq\) \bumpeq
15 \(\Re\) \Re 47 \(\Bumpeq\) \Bumpeq
16 \(\circledS\) \circledS 48 \(\doteqdot\) \doteqdot
17 \(\amalg\) \amalg 49 \(\risingdotseq\) \risingdotseq
18 \(\%\) \% 50 \(\fallingdotseq\) \fallingdotseq
19 \(\dagger\) \dagger 51 \(\intercal\) \intercal
20 \(\ddagger\) \ddagger 52 \(\barwedge\) \barwedge
21 \(\ldots\) \ldots 53 \(\veebar\) \veebar
22 \(\cdots\) \cdots 54 \(\doublebarwedge\) \doublebarwedge
23 \(\smile\) \smile 55 \(\between\) \between
24 \(\frown\) \frown 56 \(\pitchfork\) \pitchfork
25 \(\wr\) \wr 57 \(\vartriangleleft\) \vartriangleleft
26 \(\triangleleft\) \triangleleft 58 \(\ntriangleleft\) \ntriangleleft
27 \(\triangleright\) \triangleright 59 \(\vartriangleright\) \vartriangleright
28 \(\diamondsuit\) \diamondsuit 60 \(\ntriangleright\) \ntriangleright
29 \(\heartsuit\) \heartsuit 61 \(\trianglelefteq\) \trianglelefteq
30 \(\clubsuit\) \clubsuit 62 \(\ntrianglelefteq\) \ntrianglelefteq
31 \(\spadesuit\) \spadesuit 63 \(\trianglerighteq\) \trianglerighteq
32 \(\Game\) \Game 64 \(\ntrianglerighteq\) \ntrianglerighteq

分数

类型 符号 LaTeX
分数 \(\frac{2}{4}x=0.5x or {2 \over 4}x=0.5x\) \frac{2}{4}x=0.5x or {2 \over 4}x=0.5x
小型分数 \(\tfrac{2}{4}x = 0.5x\) \tfrac{2}{4}x = 0.5x
大型分数
(不嵌套)
\(\dfrac{2}{4} = 0.5 \qquad \dfrac{2}{c + \dfrac{2}{d + \dfrac{2}{4}}} = a\) \dfrac{2}{4} = 0.5 \qquad \dfrac{2}{c + \dfrac{2}{d + \dfrac{2}{4}}} = a
大型分数
(嵌套)
\(\cfrac{2}{c + \cfrac{2}{d + \cfrac{2}{4}}} = a\) \cfrac{2}{c + \cfrac{2}{d + \cfrac{2}{4}}} = a

数值函数

符号 LaTeX
\(\exp_a b = a^b, \exp b = e^b, 10^m\) \exp_a b = a^b, \exp b = e^b, 10^m
\(\ln c, \lg d = \log e, \log_{10} f\) \ln c, \lg d = \log e, \log_{10} f
\(\sin a, \cos b, \tan c, \cot d, \sec e, \csc f\) \sin a, \cos b, \tan c, \cot d, \sec e, \csc f
\(\arcsin a, \arccos b, \arctan c\) \arcsin a, \arccos b, \arctan c
\(\operatorname{arccot} d, \operatorname{arcsec} e, \operatorname{arccsc} f\) \operatorname{arccot} d, \operatorname{arcsec} e, \operatorname{arccsc} f
\(\sinh a, \cosh b, \tanh c, \coth d\) \sinh a, \cosh b, \tanh c, \coth d
\(\operatorname{sh}k, \operatorname{ch}l, \operatorname{th}m, \operatorname{coth}n\) \operatorname{sh}k, \operatorname{ch}l, \operatorname{th}m, \operatorname{coth}n
\(\operatorname{argsh}o, \operatorname{argch}p, \operatorname{argth}q\) \operatorname{argsh}o, \operatorname{argch}p, \operatorname{argth}q
\(\operatorname{sgn}r, \left\vert s \right\vert\) \operatorname{sgn}r, \left\vert s \right\vert
\(\min(x,y), \max(x,y)\) \min(x,y), \max(x,y)

如果需要使用特殊的函数符号,那么可以采用 \operatorname{} 命令进行自定义:

符号 LaTeX
\(\operatorname{mydefine}x\) \operatorname{mydefine}x

根式

符号 LaTeX 符号 LaTeX
\(\surd\) \surd \(\sqrt[n]{\pi}\) \sqrt[n]{\pi}
\(\sqrt{\pi}\) \sqrt{\pi} \(\sqrt[3]{\frac{x^3+y^3}{2}}\) \sqrt[3]{\frac{x^3+y^3}{2}}*_

微分与导数

符号 LaTeX
\(dt, \mathrm{d}t, \partial t, \nabla\psi\) dt, \mathrm{d}t, \partial t, \nabla\psi
\(dy/dx, \mathrm{d}y/\mathrm{d}x, \frac{dy}{dx}, \frac{\mathrm{d}y}{\mathrm{d}x}, \frac{\partial^2}{\partial x_1\partial x_2}y\) dy/dx, \mathrm{d}y/\mathrm{d}x, \frac{dy}{dx}, \frac{\mathrm{d}y}{\mathrm{d}x}, \frac{\partial^2}{\partial x_1\partial x_2}y
\(\prime, \backprime, f^\prime, f', f'', f^{(3)}, \dot y, \ddot y\) \prime, \backprime, f^\prime, f', f'', f^{(3)}, \dot y, \ddot y

模运算

符号 LaTeX
\(s_k \equiv 0 \pmod{m}\) s_k \equiv 0 \pmod{m}
\(a \bmod b\) a \bmod b
\(\gcd(m, n), \operatorname{lcm}(m, n)\) \gcd(m, n), \operatorname{lcm}(m, n)
\(\mid, \nmid, \shortmid, \nshortmid\) \mid, \nmid, \shortmid, \nshortmid

极限

符号 LaTeX
\(\lim_{n \to \infty}x_n\) \lim_{n \to \infty}x_n
\(\textstyle \lim_{n \to \infty}x_n\) \textstyle \lim_{n \to \infty}x_n

范围与预测

符号 LaTeX
\(\min x, \max y, \inf s, \sup t\) \min x, \max y, \inf s, \sup t
\(\lim u, \liminf v, \limsup w\) \lim u, \liminf v, \limsup w
\(\dim p, \deg q, \det m, \ker\phi\) \dim p, \deg q, \det m, \ker\phi
\(\Pr j, \hom l, \lVert z \rVert, \arg z\) \Pr j, \hom l, \lVert z \rVert, \arg z

积分

符号 LaTeX
\(\int\limits_{1}^{3}\frac{e^3/x}{x^2}\, dx\) \int\limits_{1}^{3}\frac{e^3/x}{x^2}\, dx
\(\int_{1}^{3}\frac{e^3/x}{x^2}\, dx\) \int_{1}^{3}\frac{e^3/x}{x^2}\, dx
\(\textstyle \int\limits_{-N}^{N} e^x dx\) \textstyle \int\limits_{-N}^{N} e^x dx
\(\textstyle \int_{-N}^{N} e^x dx\) \textstyle \int_{-N}^{N} e^x dx
\(\iint\limits_D dx\,dy\) \iint\limits_D dx\,dy
\(\iiint\limits_E dx\,dy\,dz\) \iiint\limits_E dx\,dy\,dz
\(\iiiint\limits_F dx\,dy\,dz\,dt\) \iiiint\limits_F dx\,dy\,dz\,dt
\(\int_{(x,y)\in C} x^3\, dx + 4y^2\,dy\) \int_{(x,y)\in C} x^3\, dx + 4y^2\, dy
\(\oint_{(x,y)\in C} x^3\, dx + 4y^2\,dy\) \oint_{(x,y)\in C} x^3\, dx + 4y^2\, dy

注意:积分符号采用 \int\_{}^{} 命令调用,双重积分符号采用 \iint\_{}^{},以此类推,最高可以支持四重积分。

曲线积分可以使用 \oint 命令调用,但是 MathJax 并不支持该语法,因此在开启了 Unicode 扩展的前提下,可以改为采用 \unicode{} 命令调用:

符号 LaTeX 描述
\(\unicode{8751} \unicode{x222F}_C\) \unicode{8751} \unicode{x222F}_C 曲面积分符号的 Unicode 码十进制为 8751,十六进制为 x222F
\(\unicode{8752} \unicode{x2230}_C\) \unicode{8752} \unicode{x2230}_C 三维曲面积分符号的 Unicode 码十进制为 8752,十六进制为 x2230
\(\unicode{8753} \unicode{x2231}_c \unicode{8754} \unicode{x2232}_c \unicode{8755} \unicode{x2233}_c\) \unicode{8753} \unicode{x2231}_c \unicode{8754} \unicode{x2232}_c \unicode{8755} \unicode{x2233}_c 其它积分符号;

大型运算符

分类 符号 LaTeX 符号 LaTeX
求和 \(\sum_{a}^{b}\) \sum_{a}^{b} \(\textstyle \sum_{a}^{b}\) \textstyle \sum_{a}^{b}
连乘积 \(\prod_{a}^{b}\) \prod_{a}^{b} \(\textstyle \prod_{a}^{b}\) \textstyle \prod_{a}^{b}
余积 \(\coprod_{a}^{b}\) \coprod_{a}^{b} \(\textstyle \coprod_{a}^{b}\) \textstyle \coprod_{a}^{b}
并集 \(\bigcup_{a}^{b}\) \bigcup_{a}^{b} \(\textstyle \bigcup_{a}^{b}\) \textstyle \bigcup_{a}^{b}
交集 \(\bigcap_{a}^{b}\) \bigcap_{a}^{b} \(\textstyle \bigcap_{a}^{b}\) \textstyle \bigcap_{a}^{b}
析取 \(\bigvee_{a}^{b}\) \bigvee_{a}^{b} \(\textstyle \bigvee_{a}^{b}\) \textstyle \bigvee_{a}^{b}
合取 \(\bigwedge_{a}^{b}\) \bigwedge_{a}^{b} \(\textstyle \bigwedge_{a}^{b}\) \textstyle \bigwedge_{a}^{b}

上下标

类型 符号 代码
上标 \(a^2\)
\(a^{x+3}\)
a^2
a^{x+3}
下标 \(a_2\) a_2
组合 \(10^{30} a^{2+2}\)
\(a{i,j} b{f'}\)
10^{30} a^{2+2}
a{i,j} b{f'}
上下标混合 \(x_2^3\)
\({x_2}^3\)
x_2^3
{x_2}^3
上标的上标 \(10^{10^{8}}\) 10^{10^{8}}
混合标识 \(\sideset{1^2}{3^4}X_a^b\)
\({}_1^2!\Omega_3^4\)
\sideset{1^2}{3^4}X_a^b
{}_1^2!\Omega_3^4
顶标底标 \(\overset{\alpha}{\omega}\)
\(\underset{\alpha}{\omega}\)
\(\overset{\alpha}{\underset{\gamma}{\omega}}\)
\(\stackrel{\alpha}{\omega}\)
\overset{\alpha}{\omega}
\underset{\alpha}{\omega}
\overset{\alpha}{\underset{\gamma}{\omega}}
\stackrel{\alpha}{\omega}
导数 \(x', y'', f', f''\) \(x^\prime, y^{\prime\prime}\) x', y'', f', f'' x^\prime, y^{\prime\prime}
导数点 \(\dot{x}, \ddot{x}\) \dot{x}, \ddot{x}
上下划线与向量 \(\hat a \ \bar b \ \vec c\)
\(\overrightarrow{a b} \ \overleftarrow{c d} \ \widehat{d e f}\)
\(\overline{g h i} \ \underline{j k l}\)
\hat a \ \bar b \ \vec c
\overrightarrow{a b} \ \overleftarrow{c d} \ \widehat{d e f}
\overline{g h i} \ \underline{j k l}
弧度 \(\overset{\frown} {AB}\) \overset{\frown} {AB}
箭头 \(A \xleftarrow{n+\mu-1} B \xrightarrow[T]{n\pm i-1} C\) A \xleftarrow{n+\mu-1} B \xrightarrow[T]{n\pm i-1} C
大括号 \(\overbrace{ 1+2+\cdots+100 }^{5050}\) \overbrace{ 1+2+\cdots+100 }^{5050}
底部大括号 \(\underbrace{ a+b+\cdots+z }_{26}\) \underbrace{ a+b+\cdots+z }_{26}
求和运算 \(\sum_{k=1}^N k^2\) \sum_{k=1}^N k^2
文本模式下的求和运算 \(\textstyle \sum_{k=1}^N k^2\) \textstyle \sum_{k=1}^N k^2
分式中的求和运算 \(\frac{\sum_{k=1}^N k^2}{a}\) \frac{\sum_{k=1}^N k^2}{a}
分式中的求和运算 \(\frac{\displaystyle \sum_{k=1}^N k^2}{a}\) \frac{\displaystyle \sum_{k=1}^N k^2}{a}
分式中的求和运算 \(\frac{\sum\limits^{^N}_{k=1} k^2}{a}\) \frac{\sum\limits^{^N}_{k=1} k^2}{a}
乘积运算 \(\prod_{i=1}^N x_i\) \prod_{i=1}^N x_i
乘积运算 \(\textstyle \prod_{i=1}^N x_i\) \textstyle \prod_{i=1}^N x_i
副乘运算 \(\coprod_{i=1}^N x_i\) \coprod_{i=1}^N x_i
副乘运算 \(\textstyle \coprod_{i=1}^N x_i\) \textstyle \coprod_{i=1}^N x_i
极限 \(\lim_{n \to \infty}x_n\) \lim_{n \to \infty}x_n
极限 \(\textstyle \lim_{n \to \infty}x_n\) \textstyle \lim_{n \to \infty}x_n
积分 \(\int\limits_{1}^{3}\frac{e^3/x}{x^2}\, dx\) \int\limits_{1}^{3}\frac{e^3/x}{x^2}\, dx
积分 \(\int_{1}^{3}\frac{e^3/x}{x^2}\, dx\) \int_{1}^{3}\frac{e^3/x}{x^2}\, dx
积分 \(\textstyle \int\limits_{-N}^{N} e^x dx\) \textstyle \int\limits_{-N}^{N} e^x dx
积分 \(\textstyle \int_{-N}^{N} e^x dx\) \textstyle \int_{-N}^{N} e^x dx
双重积分 \(\iint\limits_D dx\,dy\) \iint\limits_D dx\,dy
三重积分 \(\iiint\limits_E dx\,dy\,dz\) \iiint\limits_E dx\,dy\,dz
四重积分 \(\iiiint\limits_F dx\,dy\,dz\,dt\) \iiiint\limits_F dx\,dy\,dz\,dt
路径积分 \(\int_{(x,y)\in C} x^3\, dx + 4y^2\, dy\) \int_{(x,y)\in C} x^3\, dx + 4y^2\, dy
环路积分 \(\oint_{(x,y)\in C} x^3\, dx + 4y^2\, dy\) \oint_{(x,y)\in C} x^3\, dx + 4y^2\, dy
交集 \(\bigcap_{i=1}^n E_i\) \bigcap_{i=1}^n E_i
并集 \(\bigcup_{i=1}^n E_i\) \bigcup_{i=1}^n E_i

二项式系数

类型 符号 LaTeX
二项式系数 \(\binom{n}{k}\) \binom{n}{k}
小型二项式系数 \(\tbinom{n}{k}\) \tbinom{n}{k}
大型二项式系数 \(\dbinom{n}{k}\) \dbinom{n}{k}

矩阵

符号 LaTeX
\[ \begin{matrix} x & y \\ z & v \end{matrix} \]
1
2
3
4
\begin{matrix}
x & y \\
z & v
\end{matrix}
\[ \begin{vmatrix} x & y \\ z & v \end{vmatrix} \]
1
2
3
4
\begin{vmatrix}
x & y \\
z & v
\end{vmatrix}
\[ \begin{Vmatrix} x & y \\ z & v \end{Vmatrix} \]
1
2
3
4
\begin{Vmatrix}
x & y \\
z & v
\end{Vmatrix}
\[ \begin{bmatrix} 0 & \cdots & 0 \\ \vdots & \ddots & \vdots \\ 0 & \cdots & 0 \end{bmatrix} \]
1
2
3
4
5
\begin{bmatrix}
0 & \cdots & 0 \\
\vdots & \ddots & \vdots \\
0 & \cdots & 0
\end{bmatrix}
\[ \begin{Bmatrix} x & y \\ z & v \end{Bmatrix} \]
1
2
3
4
\begin{Bmatrix}
x & y \\
z & v
\end{Bmatrix}
\[ \begin{pmatrix} x & y \\ z & v \end{pmatrix} \]
1
2
3
4
\begin{pmatrix}
x & y \\
z & v
\end{pmatrix}
\[ \bigl( \begin{smallmatrix} a&b\\ c&d \end{smallmatrix} \bigr) \]
1
2
3
4
\bigl( \begin{smallmatrix}
a&b\\
c&d
\end{smallmatrix} \bigr)

数组

符号 LaTeX
\[ \begin{array}{ | c | c | c | } a & b & S \\ \hline 0 & 0 & 1 \\ 0 & 1 & 1 \\ 1 & 0 & 1 \\ 1 & 1 & 0 \end{array} \]
1
2
3
4
5
6
7
8
\begin{array}{ | c | c | c | }
a & b & S \\
\hline
0 & 0 & 1 \\
0 & 1 & 1 \\
1 & 0 & 1 \\
1 & 1 & 0
\end{array}

方程与方程组

符号 LaTeX
\[ \begin{cases} 3x + 5y + z \\ 7x - 2y + 4z \\ -6x + 3y + 2z \end{cases} \]
1
2
3
4
5
\begin{cases}
3x + 5y + z \\
7x - 2y + 4z \\
-6x + 3y + 2z
\end{cases}

条件定义

符号 LaTeX
\[ f(n) = \begin{cases} n/2, & \text{if }n\text{ is even} \\ 3n+1, & \text{if }n\text{ is odd} \end{cases} \]
1
2
3
4
5
f(n) =
\begin{cases}
n/2, & \text{if }n\text{ is even} \\
3n+1, & \text{if }n\text{ is odd}
\end{cases}

多行等式

符号 LaTeX
\[ \begin{align} f(x) & = (a+b)^2\\ & = a^2+2ab+b^2 \end{align} \]
1
2
3
4
\begin{align}
f(x) & = (a+b)^2\\
& = a^2+2ab+b^2
\end{align}
\[ \begin{alignat}{2} f(x) & = (a-b)^2 \\ & = a^2-2ab+b^2 \end{alignat} \]
1
2
3
4
\begin{alignat}{2}
f(x) & = (a-b)^2 \\
& = a^2-2ab+b^2
\end{alignat}
\[ \begin{array}{lcl} z & = & a \\ f(x,y,z) & = & x + y + z \end{array} \]
1
2
3
4
\begin{array}{lcl}
z & = & a \\
f(x,y,z) & = & x + y + z
\end{array}
\[ \begin{array}{lcr} z & = & a \\ f(x,y,z) & = & x + y + z \end{array} \]
1
2
3
4
\begin{array}{lcr}
z & = & a \\
f(x,y,z) & = & x + y + z
\end{array}

自动编号

描述 符号 LaTeX
开启 AMS 扩展包的情况下,会在部分环境的多行公式后自动编号; \[ \begin{eqnarray} E = mc^2 \\ e^{i\pi}+1=0 \end{eqnarray} \]
1
2
3
4
\begin{eqnarray}
E = mc^2 \\
e^{i\pi}+1=0
\end{eqnarray}
整个公式都不进行编号,可以使用{equation*}{eqnarray*}环境; \[ \begin{eqnarray*} E = mc^2 \\ e^{i\pi}+1=0 \end{eqnarray*} \]
1
2
3
4
\begin{eqnarray*}
E = mc^2 \\
e^{i\pi}+1=0
\end{eqnarray*}
单个方程不进行编号,可以在指定方程后面添加\nonumber命令; \[ \begin{eqnarray} E = mc^2 \\ e^{i\pi}+1=0 \nonumber \end{eqnarray} \]
1
2
3
4
\begin{eqnarray}
E = mc^2 \\
e^{i\pi}+1=0 \nonumber
\end{eqnarray}
个别公式出现或者不出现编号,可以在公式后使用\tag{}或者\notag命令; \[ \begin{eqnarray} E = mc^2 \notag\\ e^{i\pi}+1=0 \tag{b} \end{eqnarray} \]
1
2
3
4
\begin{eqnarray}
E = mc^2 \notag\\
e^{i\pi}+1=0 \tag{b}
\end{eqnarray}

括号

常用的 ()[]{} 括号符号可以在 LaTeX 环境当中直接进行使用,但是如果处于较大的符号当中,就应该配合 \left\right 命令来使用:

类型 符号 LaTeX
圆括号、小括号 \(\left ( \frac{a}{b} \right )\) \left ( \frac{a}{b} \right )
方括号、中括号 \(\left [ \frac{a}{b} \right ]\)
\(\left \lbrack \frac{a}{b} \right \rbrack\)
\left [ \frac{a}{b} \right ]
\left \lbrack \frac{a}{b} \right \rbrack
花括号、大括号 \(\left \{ \frac{a}{b} \right \}\)
\(\left \lbrace \frac{a}{b} \right \rbrace\)
\left \{ \frac{a}{b} \right \}
\left \lbrace \frac{a}{b} \right \rbrace
角括号 \(\left \langle \frac{a}{b} \right \rangle\) \left \langle \frac{a}{b} \right \rangle
单竖线和双竖线 \(\left \vert \frac{a}{b} \right \vert\)
\(\left \Vert \frac{c}{d} \right \Vert\)
\left \vert \frac{a}{b} \right \vert
\left \Vert \frac{c}{d} \right \Vert
取整函数与取顶函数 \(\left \lfloor \frac{a}{b} \right \rfloor\)
\(\left \lceil \frac{c}{d} \right \rceil\)
\left \lfloor \frac{a}{b} \right \rfloor
\left \lceil \frac{c}{d} \right \rceil
斜线与反斜线 \(\left / \frac{a}{b} \right \backslash\) \left / \frac{a}{b} \right \backslash
上下箭头 \(\left \uparrow \frac{a}{b} \right \downarrow\)
\(\left \Uparrow \frac{a}{b} \right \Downarrow\)
\(\left \updownarrow \frac{a}{b} \right \Updownarrow\)
\left \uparrow \frac{a}{b} \right \downarrow
\left \Uparrow \frac{a}{b} \right \Downarrow
\left \updownarrow \frac{a}{b} \right \Updownarrow
混合括号 \(\left [ 0,1 \right )\)
\(\left \langle \psi \right \vert\)
\left [ 0,1 \right )
\left \langle \psi \right \vert
使用\left.\right.不显示某侧的括号; \(\left. \frac{A}{B} \right \} \to X\) \left. \frac{A}{B} \right \} \to X

注意:在 Markdown 当中使用 LaTeX 时,为了避免语法冲突,花括号 {} 必须采用 \{\} 进行转义,或者改用 \lbrace\rbrace 的方式;如果是在 Markdown 表格当中使用 LaTeX,则必须采用 \vert 或者 \Vert 代替直接在公式当中书写 |||

括号尺寸

符号 LaTeX
\(( \bigl( \Bigl( \biggl( \Biggl( \dots \Biggr] \biggr] \Bigr] \bigr] ]\) ( \bigl( \Bigl( \biggl( \Biggl( \dots \Biggr] \biggr] \Bigr] \bigr] ]
\(\{ \bigl \{ \Bigl \{ \biggl \{ \Biggl \{ \dots \Biggr\rangle \biggr\rangle \Bigr\rangle \bigr\rangle \rangle\) \{ \bigl \{ \Bigl \{ \biggl \{ \Biggl \{ \dots \Biggr\rangle \biggr\rangle \Bigr\rangle \bigr\rangle \rangle
\(\vert \big \vert \Big \vert \bigg \vert \Bigg \vert \dots \Bigg \vert \bigg \vert \Big \vert \big \vert\) \vert \big \vert \Big \vert \bigg \vert \Bigg \vert \dots \Bigg \vert \bigg \vert \Big \vert \big \vert
\(\lfloor \bigl\lfloor \Bigl\lfloor \biggl\lfloor \Biggl\lfloor \dots \Biggr\rceil \biggr\rceil \Bigr\rceil \bigr\rceil \rceil\) \lfloor \bigl\lfloor \Bigl\lfloor \biggl\lfloor \Biggl\lfloor \dots \Biggr\rceil \biggr\rceil \Bigr\rceil \bigr\rceil \rceil
\(\uparrow \big\uparrow \Big\uparrow \bigg\uparrow \Bigg\uparrow \dots \Bigg\Downarrow \bigg\Downarrow \Big\Downarrow \big\Downarrow \Downarrow\) \uparrow \big\uparrow \Big\uparrow \bigg\uparrow \Bigg\uparrow \dots \Bigg\Downarrow \bigg\Downarrow \Big\Downarrow \big\Downarrow \Downarrow
\(\updownarrow \big\updownarrow \Big\updownarrow \bigg\updownarrow \Bigg\updownarrow \dots \Bigg\Updownarrow \bigg\Updownarrow \Big\Updownarrow \big\Updownarrow \Updownarrow\) \updownarrow \big\updownarrow \Big\updownarrow \bigg\updownarrow \Bigg\updownarrow \dots \Bigg\Updownarrow \bigg\Updownarrow \Big\Updownarrow \big\Updownarrow \Updownarrow
\(/ \big/ \Big/ \bigg/ \Bigg/ \dots \Bigg\backslash \bigg\backslash \Big\backslash \big\backslash \backslash\) / \big/ \Big/ \bigg/ \Bigg/ \dots \Bigg\backslash \bigg\backslash \Big\backslash \big\backslash \backslash

空格与换行

序号 符号 LaTeX
双空格 \(a \qquad b\) a \qquad b
单空格 \(a \quad b\) a \quad b
字符空格 \(a\ b\) a\ b
文本模式中的字符空格 \(a \text{ } b\) a \text{ } b
大空格 \(a\;b\) a\;b
小空格 \(a\,b\) a\,b
极小空格 \(ab\) ab
极小空格(用于区分语法) \(a b\) a b
无空格(用于区分多字母变量) \(\mathit{ab}\) \mathit{ab}

MathJax 3.0 取消了单行公式环境下 \\ 的强制换行功能,因此强制换行命令 \\ 仅能用于 eqnarrayalignarraymatrix 等多行环境当中。除此之外,还可以在 \displaylines{} 行显示命令当中使用 \\ 强制换行命令:

符号 LaTeX
\(\displaylines{y=1729x \\ y=1729-x}\) \displaylines{y=1729x \\ y=1729-x}

颜色

编写 LaTeX 的时候,支持将文本符号或者背景设置为下面表格当中的各种颜色:

\(\color{Apricot}{Apricot}\) - Apricot \(\color{Emerald}{Emerald}\) - Emerald \(\color{OliveGreen}{OliveGreen}\) - OliveGreen \(\color{RubineRed}{RubineRed}\) - RubineRed
\(\color{Aquamarine}{Aquamarine}\) - Aquamarine \(\color{ForestGreen}{ForestGreen}\) - ForestGreen \(\color{Orange}{Orange}\) - Orange \(\color{Salmon}{Salmon}\) - Salmon
\(\color{Bittersweet}{Bittersweet}\) - Bittersweet \(\color{Fuchsia}{Fuchsia}\) - Fuchsia \(\color{OrangeRed}{OrangeRed}\) - OrangeRed \(\color{SeaGreen}{SeaGreen}\) - SeaGreen
\(\color{Black}{Black}\) - Black \(\color{Goldenrod}{Goldenrod}\) - Goldenrod \(\color{Orchid}{Orchid}\) - Orchid \(\color{Sepia}{Sepia}\) - Sepia
\(\color{Blue}{Blue}\) - Blue \(\color{Gray}{Gray}\) - Gray \(\color{Peach}{Peach}\) - Peach \(\color{SkyBlue}{SkyBlue}\) - SkyBlue
\(\color{BlueGreen}{BlueGreen}\) - BlueGreen \(\color{Green}{Green}\) - Green \(\color{Periwinkle}{Periwinkle}\) - Periwinkle \(\color{SpringGreen}{SpringGreen}\) - SpringGreen
\(\color{Blueviolet}{Blueviolet}\) - Blueviolet \(\color{GreenYellow}{GreenYellow}\) - GreenYellow \(\color{PineGreen}{PineGreen}\) - PineGreen \(\color{Tan}{Tan}\) - Tan
\(\color{BrickRed}{BrickRed}\) - BrickRed \(\color{JungleGreen}{JungleGreen}\) - JungleGreen \(\color{Plum}{Plum}\) - Plum \(\color{TealBlue}{TealBlue}\) - TealBlue
\(\color{Brown}{Brown}\) - Brown \(\color{Lavender}{Lavender}\) - Lavender \(\color{ProcessBlue}{ProcessBlue}\) - ProcessBlue \(\color{Thistle}{Thistle}\) - Thistle
\(\color{BurntOrange}{BurntOrange}\) - BurntOrange \(\color{LimeGreen}{LimeGreen}\) - LimeGreen \(\color{Purple}{Purple}\) - Purple \(\color{Turquoise}{Turquoise}\) - Turquoise
\(\color{CadetBlue}{CadetBlue}\) - CadetBlue \(\color{Magenta}{Magenta}\) - Magenta \(\color{RawSienna}{RawSienna}\) - RawSienna \(\color{Violet}{Violet}\) - Violet
\(\color{CarnationPink}{CarnationPink}\) - CarnationPink \(\color{Mahogany}{Mahogany}\) - Mahogany \(\color{Red}{Red}\) - Red \(\color{VioletRed}{VioletRed}\) - VioletRed
\(\color{CornFlowerBlue}{CornFlowerBlue}\) - CornFlowerBlue \(\color{Melon}{Melon}\) - Melon \(\color{Redviolet}{Redviolet}\) - Redviolet \(\color{WildStrawberry}{WildStrawberry}\) - WildStrawberry
\(\color{Cerulean}{Cerulean}\) - Cerulean \(\color{Maroon}{Maroon}\) - Maroon \(\color{RedOrange}{RedOrange}\) - RedOrange \(\color{white}{white}\) - white
\(\color{Cyan}{Cyan}\) - Cyan \(\color{MidnightBlue}{MidnightBlue}\) - MidnightBlue \(\color{Rhodamine}{Rhodamine}\) - Rhodamine \(\color{Yellow}{Yellow}\) - Yellow
\(\color{Dandelion}{Dandelion}\) - Dandelion \(\color{Mulberry}{Mulberry}\) - Mulberry \(\color{RoyalBlue}{RoyalBlue}\) - RoyalBlue \(\color{YellowGreen}{YellowGreen}\) - YellowGreen
\(\color{DarkOrchid}{DarkOrchid}\) - DarkOrchid \(\color{NavyBlue}{NavyBlue}\) - NavyBlue \(\color{RoyalPurple}{RoyalPurple}\) - RoyalPurple \(\color{YellowOrange}{YellowOrange}\) - YellowOrange

字体颜色

公式当中可以使用 {\color{hues}text} 调用颜色命令,其中 hues 参数为字体颜色,而 text 参数是公式内容

符号 LaTeX
\({\color{Blue}x^2}+{\color{Orange}2x}-{\color{LimeGreen}1}\) {\color{Blue}x^2}+{\color{Orange}2x}-{\color{LimeGreen}1}

背景颜色

文本环境中可以使用 \colorbox{hues}{text} 来调用背景颜色命令,其中 hues 参数为背景颜色,而 text 参数是公式内容

符号 LaTeX
\(\colorbox{yellow}{Thistext}\) \colorbox{yellow}{Thistext}

该命令应用于数学环境当中时,需要在第 2 个参数加入 $\displaystyle + 公式$

符号 LaTeX
\[ \colorbox{yellow}{$\displaystyle \frac{a}{b}$} \] \colorbox{yellow}{$\displaystyle \frac{a}{b}$}

注意:在 Markdown 内联 LaTeX 公式 $...$ 当中使用 $\displaystyle + 公式$ 语法时将会引发冲突,因此该语法仅用于多行公式 $$...$$

RGB 颜色

通过使用 \definecolor 命令可以自定义 LaTeX 公式的颜色:

符号 LaTeX
\(\definecolor{mygreen}{RGB}{0,200,0} {\color{mygreen}e^{i \pi} + 1 = 0 }\) \definecolor{mygreen}{RGB}{0,200,0} {\color{mygreen}e^{i \pi} + 1 = 0 }

字体

字体加粗

符号 LaTeX
\(\boldsymbol{ABCDEFGHIJKLMNOPQRSTUVWXYZ}\) \boldsymbol{ABCDEFGHIJKLMNOPQRSTUVWXYZ}
\(\boldsymbol{abcdefghijklmnopqrstuvwxyz}\) \boldsymbol{abcdefghijklmnopqrstuvwxyz}
\(\boldsymbol{0123456789}\) \boldsymbol{0123456789}

黑体

符号 LaTeX
\(\mathbf{ABCDEFGHIJKLMNOPQRSTUVWXYZ}\) \mathbf{ABCDEFGHIJKLMNOPQRSTUVWXYZ}
\(\mathbf{abcdefghijklmnopqrstuvwxyz}\) \mathbf{abcdefghijklmnopqrstuvwxyz}
\(\mathbf{0123456789}\) \mathbf{0123456789}

黑板报体

符号 LaTeX
\(\mathbb{ABCDEFGHIJKLMNOPQRSTUVWXYZ}\) \mathbb{ABCDEFGHIJKLMNOPQRSTUVWXYZ}
\(\mathbb{abcdefghijklmnopqrstuvwxyz}\) \mathbb{abcdefghijklmnopqrstuvwxyz}
\(\mathbb{0123456789}\) \mathbb{0123456789}

斜体

符号 LaTeX
\(\mathit{ABCDEFGHIJKLMNOPQRSTUVWXYZ}\) \mathit{ABCDEFGHIJKLMNOPQRSTUVWXYZ}
\(\mathit{abcdefghijklmnopqrstuvwxyz}\) \mathit{abcdefghijklmnopqrstuvwxyz}
\(\mathit{0123456789}\) \mathit{0123456789}

罗马体

符号 LaTeX
\(\mathrm{ABCDEFGHIJKLMNOPQRSTUVWXYZ}\) \mathrm{ABCDEFGHIJKLMNOPQRSTUVWXYZ}
\(\mathrm{abcdefghijklmnopqrstuvwxyz}\) \mathrm{abcdefghijklmnopqrstuvwxyz}
\(\mathrm{0123456789}\) \mathrm{0123456789}

无衬线体

符号 LaTeX
\(\mathsf{ABCDEFGHIJKLMNOPQRSTUVWXYZ}\) \mathsf{ABCDEFGHIJKLMNOPQRSTUVWXYZ}
\(\mathsf{abcdefghijklmnopqrstuvwxyz}\) \mathsf{abcdefghijklmnopqrstuvwxyz}
\(\mathsf{0123456789}\) \mathsf{0123456789}

手写体

符号 LaTeX
\(\mathcal{ABCDEFGHIJKLMNOPQRSTUVWXYZ}\) \mathcal{ABCDEFGHIJKLMNOPQRSTUVWXYZ}
\(\mathcal{abcdefghijklmnopqrstuvwxyz}\) \mathcal{abcdefghijklmnopqrstuvwxyz}
\(\mathcal{0123456789}\) \mathcal{0123456789}

哥特字体

符号 LaTeX
\(\mathfrak{ABCDEFGHIJKLMNOPQRSTUVWXYZ}\) \mathfrak{ABCDEFGHIJKLMNOPQRSTUVWXYZ}
\(\mathfrak{abcdefghijklmnopqrstuvwxyz}\) \mathfrak{abcdefghijklmnopqrstuvwxyz}
\(\mathfrak{0123456789}\) \mathfrak{0123456789}

小脚本风格

符号 LaTeX
\({\scriptstyle\text{ABCDEFGHIJKLMNOPQRSTUVWXYZ}}\) {\scriptstyle\text{ABCDEFGHIJKLMNOPQRSTUVWXYZ}}
\({\scriptstyle\text{abcdefghijklmnopqrstuvwxyz}}\) {\scriptstyle\text{abcdefghijklmnopqrstuvwxyz}}
\({\scriptstyle\text{0123456789}}\) {\scriptstyle\text{0123456789}}

字号尺寸

符号 LaTeX
\({\tiny abc 极小 tiny}\) {\tiny abc极小tiny}
\({\scriptsize abc 超小 scriptsize}\) {\scriptsize abc 超小 scriptsize}
\({\small abc 小 small}\) {\small abc 小 small}
\({\normalsize abc 正常 normal}\) {\normalsize abc 正常 normal}
\({\large abc 大 large}\) {\large abc 大 large}
\({\Large abc 超大 Large}\) {\Large abc 超大 Large}
\({\LARGE abc 特大 LARGE}\) {\LARGE abc 特大 LARGE}
\({\huge abc 巨大 huge}\) {\huge abc 巨大 huge}s
\({\Huge abc 巨无霸 Huge}\) {\Huge abc 巨无霸 Huge}